Back to EveryPatent.com
United States Patent |
5,513,871
|
Johnson
|
May 7, 1996
|
Gooseneck trailer hitch locking device
Abstract
An anti-theft device which obstructs the socket and coupler lever of a
gooseneck trailer hitch coupling mechanism and prevents a gooseneck
trailer from being towed, made up of a receiving device and a pair of
upright members each permanently affixed to a plate. The plate is
dimensioned to match the footprint of the coupler. The receiving device is
adapted to matingly engage with the socket. A first upright member and a
second upright member are each affixed at a right angle to the plate on
the same side of the plate as the receiving device and parallel to each
other at a predetermined distance so that, when the receiving device is
inserted into an open socket, the first upright member and second upright
member extend contiguously upward on opposite sides of the coupler lever.
A handle is affixed to the underside of the plate for single-handed
insertion. The upright members are formed so that the upper end forms a
"U"- channel, dimensioned to snugly accept the body of a padlock. Each
upright member includes an opening in registry with the other, dimensioned
to accept a securing bolt. The bolt when inserted through the registered
openings of upright members prevents operation of the coupler lever. The
bolt includes a bore to accept the shackle of a padlock or other similar
lock, which secures the securing bolt onto the upright members. The
padlock is also protected from being cut by the "U"-shaped channel.
Inventors:
|
Johnson; Charles T. (Rte. 1, Box 8 AB, Grandview, TX 76050)
|
Appl. No.:
|
488497 |
Filed:
|
June 9, 1995 |
Current U.S. Class: |
280/507 |
Intern'l Class: |
B60D 001/60 |
Field of Search: |
280/507,423.1,511,512
70/14,258
|
References Cited
U.S. Patent Documents
3226133 | Dec., 1965 | Geresy | 280/507.
|
3233913 | Feb., 1966 | Brown | 280/507.
|
4141569 | Feb., 1979 | Dilk | 280/507.
|
4691935 | Sep., 1987 | Brandt | 280/507.
|
5087064 | Feb., 1992 | Guhlin | 280/507.
|
5181405 | Jan., 1993 | Wheeler | 70/232.
|
5222755 | Jun., 1993 | O'Neal | 280/507.
|
5255545 | Oct., 1993 | Wheeler | 70/232.
|
5322316 | Jun., 1994 | Wheeler | 280/507.
|
Primary Examiner: Hurley; Kevin T.
Attorney, Agent or Firm: Litman; Richard C.
Claims
I claim:
1. A gooseneck trailer hitch locking device comprising:
receiving means adapted to receive the socket of a gooseneck trailer hitch;
and
coupler lever obstructing means adapted to obstruct the movement of a
gooseneck trailer hitch coupler lever, said coupler lever obstructing
means integrally cooperating with said receiving means by means of a rigid
communicating member,
whereby an integral assembly is defined which may be positioned onto a
gooseneck trailer hitch to occlude simultaneously the use of the coupler
lever and the socket.
2. The locking device according to claim 1, further comprising a
non-integral securing means adapted to prevent removal of said integral
assembly from the socket and coupler lever.
3. The locking device according to claim 1, further comprising a handle by
which said integral assembly may be grasped.
4. The locking device according to claim 1, wherein said receiving means is
a towing post.
5. The locking device according to claim 1, wherein said rigid
communicating member is a plate.
6. The locking device according to claim 1, wherein said coupler lever
obstructing means further comprises a plurality of upright members, said
plurality of upright members further comprising at least a first upright
member and a second upright member, each upright member having a first end
and a second end, each said first end being affixed to said rigid
communicating member at an approximate right angle, and said first upright
member and said second upright member being so affixed in a substantially
parallel relation to each other at a predetermined distance apart.
7. The locking device according to claim 6, further comprising
a securing bolt; and,
wherein each said upright member defines an opening near the second end,
said opening of said first upright member being in registry with said
opening of the second upright member, each said opening adapted to receive
the securing bolt, said securing bolt having a shaft of a predetermined
length and of a substantially same cross section as the cross section of
the registered openings enabling the securing bolt to pass through the
registered openings unhindered.
8. The locking device according to claim 7 wherein said securing bolt,
having a proximate and a distal end, has a head on said proximate end so
as to prevent passage of said securing bolt entirely through said
registered openings, and a bore in said distal end.
9. The locking device according to claim 7, further comprising a suspending
means for flexibly connecting said securing bolt to said locking device.
10. A gooseneck trailer hitch locking device comprising:
a plate;
a towing post adapted to receive the socket of a gooseneck trailer hitch;
a plurality of upright members, said plurality of upright members further
comprising at least a first upright member and a second upright member,
each upright member having a first end and a second end, each said first
end being affixed to said plate at an approximate right angle, and said
first upright member and said second upright member being so affixed in a
substantially parallel relation to each other at a predetermined distance
apart whereby the movement of a gooseneck trailer hitch coupler lever is
substantially obstructed;
said plate, said towing post, and said upright members being integrally and
fixedly affixed in relation to one another whereby an integral assembly is
defined which may be positioned onto a gooseneck trailer hitch to occlude
simultaneously the use of the coupler lever and the socket.
11. The locking device according to claim 10, further comprising a handle
for grasping said locking device, said handle being integrally affixed to
said locking device.
12. The locking device according to claim 10, further comprising
a securing bolt; and
wherein each upright member defines an opening near the second end, said
opening of said first upright member being in registry with said opening
of the second upright member, each said opening adapted to receive a
securing bolt, said securing bolt having a shaft of a predetermined length
and of a substantially same cross section as the cross section of the
registered openings enabling the securing bolt to pass through the
registered openings unhindered.
13. The locking device according to claim 12 wherein said securing bolt,
having a proximate and a distal end, has a head on said proximate end so
as to prevent passage of said securing bolt entirely through said
registered openings, and a bore in said distal end.
14. The locking device according to claim 12, further comprising a
suspending means for flexibly connecting said securing bolt to said
locking device.
Description
BACKGROUND OF THE INVENTION
1. FIELD OF THE INVENTION
The present invention relates to an anti-theft device which obstructs the
socket and coupler lever of a gooseneck trailer hitch coupling mechanism
and prevents the gooseneck trailer from being towed.
2. DESCRIPTION OF THE PRIOR ART
Anti-theft devices intended to protect against theft of an unattended and
unhitched trailer are abundant in the prior art. Although trailer hitches
commonly use one of three standard varieties of hitches (ball and socket
type hitches, king-pin hitches, and gooseneck hitches) many of these
anti-theft devices incorporate a means of blocking the socket of a trailer
hitch coupling mechanism. However, each type of trailer hitch presents
unique differences which result in different conceptual approaches to
protect a trailer from being towed.
For example, the typical gooseneck trailer hitch is made up of an irregular
or non-symmetrical coupler foot plate attached to the lower end of a
generally vertical post, the upper end of which post is attached to the
trailer. Such a gooseneck coupling mechanism is significantly different
from tongued trailers, the type which are commonly recognized for
trailering boats. Whereas tongued trailers are generally horizontally
configured, the trailer tongue being in the same plane as the coupling
mechanism which connects with a receiving device on a pull vehicle, the
post in gooseneck hitches may have a horizontal beam attached at a right
angle to the upper end of the post, which horizontal beam attaches to the
front of the trailer.
The coupler at the lower end of the post generally connects with a
receiving device on a pull vehicle. The gooseneck trailer coupler itself
is made up of front and rear facing portions of various configurations,
one portion usually including a lever that operates the coupler. The
coupler lever is generally made up of a cylindrical bar having a vertical
component which penetrates an aperture in the foot plate of the coupler
and a horizontal component at its upper end by which the user may grasp
the lever.
To couple a gooseneck trailer to a pull vehicle, requires manipulation of
the coupler lever. Manipulation is usually performed by initially raising
the coupler lever vertically so that vertical component is removed from
the aperture in the foot plate, thereby allowing the securing mechanism to
be positioned to either accept or release the receiving device of the pull
vehicle ("open" position). After the socket has received the receiving
device on the pull vehicle, the coupler lever is released, whereupon the
vertical component again is received by the foot plate aperture, thereby
returning the coupler lever to its original resting position ("closed
position").
The following patents are illustrative of various devices which apply the
concept of blocking a receiving socket of a tongued trailer. U.S. Pat. No.
4,141,569 issued Feb. 27, 1979 to Dilk describes an anti-theft device for
a tongued trailer which utilizes a receiving ball covered by a steel box
with a hinged cover acting in combination with a padlock. A receiving ball
is affixed on the bottom plate of an open topped steel box wherein one of
the end plates is removed so as to enable the box to receive the trailer
tongue and coupler. When the receiving ball receives the trailer socket, a
second covering plate is fitted over the top of the trailer coupling
mechanism to encase the coupling mechanism. The covering plate and the box
interact so that the padlock both secures the box and is partially encased
exposing only the key opening of the lock, further preventing tampering
with the padlock.
U.S. Pat. No. 3,226,133 issued Dec. 28, 1965 to Geresy describes various
embodiments of a combination of separate elements which obstruct the
coupling socket of a tongued trailer hitch. A characteristic embodiment is
made up of a ball with a bore, a headed pin of a length greater than the
bore length which is stopped in the bore by its head, and a slidable cover
plate. The elements act together by inserting the pin through the ball,
inserting the ball into the socket, and sliding the plate onto flanges on
the trailer hitch so as to cover the ball. With the plate in place, a hole
in the plate allows the pin to drop partially through the plate until the
head at the other end of the pin and bore prevents further dropping. A
padlock is then slipped through a hole in the pin to secure the assembly
in place.
U.S. Pat. No. 5,087,064 issued Feb. 11, 1992 to Guhlin shows a safety
device using an upright bar, plate and padlock combination to prevent
de-coupling of a trailer from a ball-hitch.
A major disadvantage associated with these particular anti-theft devices is
that they are inappropriate for use with a gooseneck trailer hitch because
none can encompass the vertical post.
U.S. Pat. No. 3,233,913 issued Oct. 1, 1962 to Brown describes a ball and
chain combination to obstruct a house-trailer tongue coupling socket. The
ball is inserted into the trailer hitch socket and locked in place in a
conventional manner using a padlock on the trailer coupling mechanism. The
chain is arranged through cooking gas tank handles found on the tongue of
the trailer so as to prevent their theft. U.S. Pat. No. 5,222,755 issued
Jun. 29, 1993 to O'Neal also describes a ball and chain in combination
with padlock for a gooseneck trailer hitch (see FIG. 4 of '755 patent).
The chain wraps through a coupler lever and is secured by the padlock.
Although a ball and chain arrangement could accommodate almost any trailer
hitch, the chain can be easily cut with bolt cutters. The ball is also
left exposed to attack by prying, where an unsuccessful attempt may leave
the coupling mechanism damaged.
U.S. Pat. No. 5,181,405 issued Jan. 26, 1993 to Wheeler, and U.S. Pat. No.
5,255,545 issued Oct. 26, 1993 also to Wheeler, describe a locking device
specifically adapted for use with a gooseneck trailer. A slidable plate
cooperates with a lock-body that, when aligned, receives a locking pin to
secure the plate and lock body. The locking pin is in turn locked by
insertion of a padlock. The system creates a box-like structure that
obstructs the receiving socket of a gooseneck trailer. However, this
device has the disadvantage of having multiple lock-body parts, which can
get lost and which require alignment and assembly using at least two
hands. Furthermore, the device's lock-bodies offer only one line of
defense by only slidably obstructing the socket of the coupler. For
example, the device fails to disable the securing mechanism by lacking a
means which obstructs and locks the coupler lever, nor does it supply a
receiving device which blocks the socket at the bottom of the post, nor
does it provide a means of protecting a padlock from bolt cutters.
Therefore, it is apparent that a need still exists for a unitary anti-theft
device that obstructs the socket and coupler lever of a gooseneck trailer
hitch coupling mechanism and prevents the gooseneck trailer from being
towed.
None of the above inventions and patents, taken either singly or in
combination, is seen to describe the instant invention as claimed.
SUMMARY OF THE INVENTION
The present invention relates to an anti-theft device which obstructs the
socket and coupler lever of a gooseneck trailer hitch coupling mechanism
and prevents a gooseneck trailer from being towed. The preferred
embodiment of the present invention is made up of a receiving device, a
pair of upright members, and a handle, each permanently affixed to a
plate, said plate having an topside and an underside. The plate is
elongated and dimensioned to generally match the footprint of a coupler of
a gooseneck trailer hitch. The receiving device is adapted to matingly
engage with a socket of the gooseneck trailer hitch. Each of the upright
members, comprising a first upright member and a second upright member,
are affixed at a right angle to the plate on the same side of the plate as
the receiving device. The first upright member and second upright member
are affixed parallel to each other, spaced a predetermined distance so
that, when the receiving device is inserted into the socket with the
securing mechanism in an open position, the first upright member and
second upright member extend contiguously upward on opposite sides of the
coupler lever. A handle is affixed to the underside of the plate for easy
single-handed insertion of the assembly into the socket. The entire
assembly is preferably made of tempered steel.
To install the anti-theft device, the user grasps the handle with one hand,
while positioning the coupler lever as described above with the other hand
to the open position. The receiving device is inserted from below the
coupler into the socket, while simultaneously positioning the coupler
lever between each of the upright members. While the receiving device is
fully seated in the socket with the coupler lever in the open position,
the coupler lever is in a temporary position in which the horizontal
component of the coupler lever is being held at a point above the ends of
the upright members. When the coupler lever is released from the open to
the closed position, the coupler lever returns to its resting position,
which places the horizontal-component of the lever at a point below the
upper end of the upright members.
Once the anti-theft device has been so inserted and is engaged in the
closed position, the device must be secured to prevent removal when
reversing the installation procedure described above. Each of the pair of
upright members, each having a lower end and an upper end, are formed so
that the upper end forms a "U"-shaped channel. The "U"-shaped channel is
generally dimensioned to accept standard padlocks or similar locks so that
a padlock body fits snugly within the channel. Each of the upper ends of
the upright members include openings in registry with the other,
dimensioned so as to accept a securing bolt, which registered openings are
positioned immediately above the horizontal component of the coupler lever
when in its resting position. The securing bolt has a head and a shaft
with a distal end, and may be, for convenience, suspended by a chain from
the anti-theft device itself. The distal end includes a bore to accept the
shackle of a padlock or other similar lock.
To secure the anti-theft device in place, the securing bolt is first
inserted through the registered openings above the horizontal component of
the coupler lever. The securing bolt is of predetermined and sufficient
length so that, when the securing bolt head is seated against the first
upright member, the securing bolt shaft passes through both of the
registered openings and penetrates a predetermined length beyond the
second upright member. The bore is positioned along the securing bolt
shaft within the "U"-shaped channel. This allows a padlock shackle to be
inserted through the bore so as to secure the securing bolt onto both of
the upright members and at the same time protect the padlock shackle from
being cut.
When the anti-theft device is in place, the coupler lever movement is
blocked, the socket is obstructed and the padlock is protected.
Accordingly, it is a principal object of the invention to provide a device
which prevents unauthorized towing of a gooseneck trailer.
It is another object of the invention to provide a device which obstructs
both a socket of a trailer hitch as well as the movement of a trailer's
coupling lever.
It is a further object of the invention to provide a device that can be
inserted into a trailer hitch socket with one hand.
Still another object of the invention is to provide a device which, during
the course of its ordinary use, prevents cutting devices from disabling
the padlock or similar lock used to secure the device.
These and other objects of the present invention will become readily
apparent upon further review of the following specification and drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an isometric view of the preferred embodiment of the gooseneck
trailer hitch locking device;
FIG. 2 is a side elevational view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is an environmental view of the gooseneck trailer hitch locking
device partially installed onto a trailer hitch; and
FIG. 6 is an environmental view of the gooseneck trailer hitch installed
and locked onto a trailer hitch.
Similar reference characters denote corresponding features consistently
throughout the attached drawings.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The present invention relates to an anti-theft device which obstructs the
socket and coupler lever of a gooseneck trailer hitch coupling mechanism
and prevents the gooseneck trailer from being towed.
Referring to FIGS. 1, 2, 3, and 4, the preferred embodiment of the
anti-theft device 1t is shown made up of a receiving device 10, a pair of
upright members 12, and a handle 14, each permanently affixed to a plate
16, said plate having an topside and an underside. The receiving device 10
is a cylinder 18 affixed to a post 20, which in turn is affixed to the
plate 16. The receiving device 10 should be dimensioned and configured so
as to matingly engage with a socket of the gooseneck trailer hitch;
however, any configuration, such as a standard ball from a ball hitch may
be used. The handle 14 is affixed to the underside of the plate 16
generally centered under the receiving device 10.
Each of the upright members 12, comprising a first upright member 13 and a
second upright member 15, are affixed at a right angle to the plate 16 on
the topside of the plate, the topside being the same side as that side on
which the receiving device 10 is mounted. As can be best appreciated from
FIGS. 3 and 4, the first upright member 13 and second upright member 15
are affixed parallel to each other, spaced a predetermined distance apart.
As can best be appreciated from FIGS. 5 and 6, this space allows the first
upright member 13 and second upright member 15 to extend contiguously
upward on opposite sides of the coupler lever L.
Referring to FIGS. 1, 2 and 4, each of the pair of upright members 12, each
having a lower end 24 and an upper end 26, are formed so that the upper
end forms a "U"-shaped channel 28. Each of the upper ends of the upright
members 12 define an opening 30. Each of the openings 30 are in registry.
The diameter of the registered openings 30 are dimensioned so that it
allows a securing bolt 32, having a shaft 36 of a substantially same
diameter as the diameter of the registered openings 30, to pass through
the registered openings unhindered. As can be best appreciated from FIG.
1, the securing bolt 32 has a head 34 which prevents further passage of
the securing bolt 32 through the registered openings.
As shown in FIGS. 2, 3, 4 and 5, the securing bolt 32 may be suspended by a
chain 38 to prevent the securing bolt from becoming inadvertently
misplaced. The securing bolt 32 is shown suspended by the chain 38
connected to an aperture 40 in an upright member 12. The distal end 42 of
the securing bolt 32 includes a bore 44 to accept the shackle of a padlock
or other similar lock. The securing bolt 32 is of predetermined and
sufficient length so that, when the securing bolt head is seated against
the first upright member, the securing bolt shaft passes through both of
the registered openings and penetrates a predetermined length beyond the
second upright member.
Referring to FIG. 6, the plate 16 is shown to be elongated and dimensioned
to generally match the footprint of a coupler C of a gooseneck trailer
hitch H. The elongated shape of the plate 16 provides an integral and
rigid connection between the receiving device 10 and the upright members
12. This rigid assembly enables the anti-theft device 11 to be simply
secured by a padlock P while obstructing both the coupler lever L as well
as the socket of the gooseneck trailer hitch H. As represented in FIG. 5,
a user grasps the handle 22 with one hand, while positioning the coupler
lever L with the other hand in the open position. The receiving device 10
is shown partially inserted from below the coupler C into the gooseneck
trailer hitch socket, while simultaneously positioned so that the coupler
lever L is located between each of the upright members 12. The coupler
lever L is shown in a temporary position in which the horizontal component
Z of the coupler lever L is being held at a point above the ends of the
upright members
In contrast, FIG. 6 illustrates the position of the anti-theft device 11
after it has been inserted fully into the socket and is engaged in the
closed position. As can be observed, the coupler lever L has been
released, and the coupler lever is shown in its resting position. This
position places the horizontal component Z of the coupler lever L at a
point below the upper end of the upright members 12. The registered
openings 30 are positioned so as to allow the securing bolt 32 to pass
immediately above the horizontal component Z of the coupler lever L while
in its resting position. This enables the anti-theft device 11 to be
secured to prevent removal when reversing the installation procedure
described above. Referring to FIG. 4, a plate opening 22 to allow
penetration of the plate 16 by the vertical member V of the coupler lever
L when in the closed position is shown.
FIG. 6 shows the distal end 42 of the securing bolt is shown protruding
beyond through the registered openings 30 above the horizontal component Z
of the coupler lever L. The bore 44 is positioned along the distal end 42
within the "U"-shaped channel. The shackle of a padlock P is shown
inserted through the bore 44 so as to secure the securing bolt 32 onto
both of the upright members 12 and at the same time protect the padlock
shackle from being cut. The use of a padlock P or similar locking device
secures the entire assembly when the securing bolt 32 is in place. The
"U"-shaped channel 28 is dimensioned so that the body of a padlock P fits
snugly within and against the walls of the "U"-shaped channel The body of
the padlock P faces outward so as to provide access to the padlock key
cylinder, whereas the shackle is protected within the walls of the
"U"-shaped channel 28. Although a padlock P is shown, other locking
devices can be used, such as, variously referred to, a "SHELTON INDUSTRIES
5/8 inch coupler lock" and a "FULTON TRAILER coupler lock", being of
similar dimension to a padlock.
It is to be understood that the present invention is not limited to the
embodiment described above, but encompasses any and all embodiments within
the scope of the following claims.
Top